Call it what you like—private browsing mode, Incognito mode—most people still just consider private browsing features in web browsers "porn mode". But your private browsing feature is useful for a whole lot more than covering porn habits.

Testing and Debugging Web Sites

Pr0n mode is godsend when I have to test or debug anything that's cookie-related of session-related. I use Chrome most of the time, so I can open two separate sessions (say, admin and user) on one given site at once, it really speed things up.

Manage Multiple Google Apps Accounts

I have 4 Google Apps accounts for work and organizations I volunteer. The only way I can manage multiple Google Docs accounts without going insane is by opening links in Chrome's Incognito mode. Finish editing a doc, close the window so it's ready if I have to open a doc from a different account. So it's not a time of day thing...I do it all day long.

Shopping for Gifts

View "Risque" Content (Not Porn)

I use the private mode mostly to watch certain Japanese anime that are a bit too violent or feature homosexual relationships (c.f. Elfen Lied, Junjou Romantica, etc). I guess in the US that's not that big of a deal, but were I live watching violent "cartoons" is a big NO.

Leave a Smaller Footprint at Work

I use private browsing at work when I check personal email or use other sites that I need to sign into. I'm not trying to "hide my tracks," since I know that it's ludicrous to think I have any privacy at work. But I like the all-in-one convenience private browsing offers of not keeping me logged in, not saving passwords, and erasing my history. Since this computer doesn't belong to me, I don't want to leave too much of a personal footprint.

Remember, especially at work, private browsing almost never means your IT department doesn't have countless other ways of seeing what you're doing on your computer. Also, when you're just on your own computer, private browsing mode isn't always completely fingerprint free, so check out our previous guide on how to really browse without leaving a trace for more. Got a great use for private browsing we didn't mention? Let's hear it in the comments.